DERIVATIVES AND HEDGING - Additional Information (Details) - Oaktree Capital Group Excluding Consolidated Funds	Jun. 30, 2017 USD ($)	Dec. 31, 2016 USD ($) instrument
Variable Rate Term Loan
Derivatives And Hedging Activities [Line Items]
Notional value of instrument	$ 250,000,000
Senior Unsecured Credit Facility | Variable Rate Term Loan
Derivatives And Hedging Activities [Line Items]
Notional value of instrument		$ 250,000,000.0
Interest Rate Swap | Cash Flow Hedging | Designated as Hedging Instrument
Derivatives And Hedging Activities [Line Items]
Number of interest-rate swaps (in agreements) | instrument		1
Outstanding notional value of interest-rate swaps		$ 150,000,000